/*
 * MIT License
 *
 * Copyright (c) 2024 恩爸编程
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.enba.boot.encrypt.utils;

import java.security.NoSuchAlgorithmException;
import java.util.Base64;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;

/** 生成AES对称加密密钥 */
public class AesKeyGenerator {

  public static void main(String[] args) {
    try {
      // Create a KeyGenerator for AES with 128-bit key size
      KeyGenerator keyGen = KeyGenerator.getInstance("AES");
      keyGen.init(256); // You can also use 192 or 256 bits if supported by your environment

      // Generate the secret key
      SecretKey secretKey = keyGen.generateKey();

      // Convert the secret key to a byte array and then encode it in Base64
      byte[] encodedKey = secretKey.getEncoded();
      String base64EncodedKey = Base64.getEncoder().encodeToString(encodedKey);

      // Print the Base64-encoded key
      System.out.println("Generated 128-bit AES key (Base64): " + base64EncodedKey);

    } catch (NoSuchAlgorithmException e) {
      e.printStackTrace();
    }
  }
}
